Highlighted text to bookmark

I am trying to automate creating bookmarks from the highlighted text in a document.   We use the Find, Highlight and Extract action on large document files and want to have it also create a bookmarks.  This is the javascript from the action

// Highlight Color

var colHilite = color.yellow;

var oDoc = event.target;

var aAnnts = oDoc.getAnnots({sortBy:"Author"});

for(var i=0;i<aAnnts.length;i++)

{

   if(aAnnts.type == "Redact")

   {

      aAnnts.type = "Highlight";

      aAnnts.strokeColor = colHilite;

   }

}

I have tried to use this and then add some more code for the bookmarks but have failed.  Looking for some help on this. Thanks